共查询到20条相似文献,搜索用时 31 毫秒
1.
Adam M. Goldstein 《Evolution》2009,2(3):548-559
A weblog (“blog”) is an publication on the WorldWideWeb in which brief entries are displayed in date order, much like a diary
or journal. I describe the general characteristics of blogs, contrasting blogs with other of WWW formats for self-publishing.
I describe four categories for blogs about evolutionary biology: “professional,” “amateur,” “apostolic,” and “imaginative.”
I also discuss blog networks. I identify paradigms of each category. Throughout, I aim to illuminate blogs about evolutionary
biology from the point of view of a user looking for information about the topic. I conclude that blogs are not the best type
of source for systematic and authoritative information about evolution, and that they are best used by the information-seeker
as a way of identifying what issues are of interest in the community of evolutionists and for generating research leads or
fresh insights on one’s own work.
相似文献
Adam M. GoldsteinEmail: |
2.
Jay Odenbaugh 《Biology & philosophy》2006,21(5):607-621
In this essay, I argue for four related claims. First, Richard Levins’ classic “The Strategy of Model Building in Population
Biology” was a statement and defense of theoretical population biology growing out of collaborations between Robert MacArthur,
Richard Lewontin, E. O. Wilson, and others. Second, I argue that the essay served as a response to the rise of systems ecology
especially as pioneered by Kenneth Watt. Third, the arguments offered by Levins against systems ecology and in favor of his
own methodological program are best construed as “pragmatic”. Fourth, I consider limitations of Levins’ arguments given contemporary
population biology.
相似文献
Jay OdenbaughEmail: |
3.
Deborah A. McLennan 《Evolution》2008,1(3):247-258
Darwin believed that evolution generally occurred through a series of small, gradual changes. This proposal was counter-intuitive
to many people because it seemed likely that “transitional” forms would not survive. Darwin, and later Cuènot, recognized
that this problem was easily solved if characters that had evolved for one reason changed their function at a later time with
little to no concurrent structural modification, at least initially. In other words, traits that had evolved under one set
of conditions were co-opted to serve a different function under a second set of conditions. This meant that organisms carried
with them in the structures of their genes, proteins, morphological, physiological, and behavioral characters the potential
for rapid evolutionary change, so rapid, indeed, that the process looked miraculous and Lamarckian. In this paper, I discuss
some of the paradigm examples of co-option, from genes to behavior.
相似文献
Deborah A. McLennanEmail: |
4.
5.
Luis Emilio Bruni 《Biosemiotics》2008,1(1):113-130
This article considers categorical perception (CP) as a crucial process involved in all sort of communication throughout the
biological hierarchy, i.e. in all of biosemiosis. Until now, there has been consideration of CP exclusively within the functional
cycle of perception–cognition–action and it has not been considered the possibility to extend this kind of phenomena to the
mere physiological level. To generalise the notion of CP in this sense, I have proposed to distinguish between categorical
perception (CP) and categorical sensing (CS) in order to extend the CP framework to all communication processes in living
systems, including intracellular, intercellular, metabolic, physiological, cognitive and ecological levels. The main idea
is to provide an account that considers the heterarchical embeddedness of many instances of CP and CS. This will take me to relate the hierarchical nature of categorical sensing and perception
with the equally hierarchical issues of the “binding problem”, “triadic causality”, the “emergent interpretant” and the increasing
semiotic freedom observed in biological and cognitive systems.
相似文献
Luis Emilio BruniEmail: |
6.
Abhijeet Bardapurkar 《Evolution》2008,1(3):299-305
This paper critically reviews and characterizes the student's causal-explanatory understanding; this is done as a step toward
explicating the problematic of evolution education as it concerns the cognitive difficulties in understanding Darwin's theory of natural selection. The review concludes that the student's understanding is fundamentally different from Darwin's, for
the student understands evolutionary change as necessary individual transformation caused by the transformative action of
various physical and behavioral factors. This is in complete contrast to Darwin's (and even the Darwinian's, for that matter)
understanding of evolutionary change as a change caused by accumulative selection. Hence, to understand natural selection,
the student has to learn to “see” how the accumulative selection causes evolutionary change.
相似文献
Abhijeet BardapurkarEmail: |
7.
8.
Michael Weisberg 《Biology & philosophy》2006,21(5):623-645
This paper is an interpretation and defense of Richard Levins’ “The Strategy of Model Building in Population Biology,” which
has been extremely influential among biologists since its publication 40 years ago. In this article, Levins confronted some
of the deepest philosophical issues surrounding modeling and theory construction. By way of interpretation, I discuss each
of Levins’ major philosophical themes: the problem of complexity, the brute-force approach, the existence and consequence
of tradeoffs, and robustness analysis. I argue that Levins’ article is concerned, at its core, with justifying the use of
multiple, idealized models in population biology.
相似文献
Michael WeisbergEmail: |
9.
Peter Godfrey-Smith 《Biology & philosophy》2007,22(3):429-437
Jablonka and Lamb's claim that evolutionary biology is undergoing a ‘revolution’ is queried. But the very concept of revolutionary
change has uncertain application to a field organized in the manner of contemporary biology. The explanatory primacy of sequence
properties is also discussed.
相似文献
Peter Godfrey-SmithEmail: |
10.
T. Ryan Gregory 《Evolution》2008,1(2):121-137
Charles Darwin sketched his first evolutionary tree in 1837, and trees have remained a central metaphor in evolutionary biology
up to the present. Today, phylogenetics—the science of constructing and evaluating hypotheses about historical patterns of
descent in the form of evolutionary trees—has become pervasive within and increasingly outside evolutionary biology. Fostering
skills in “tree thinking” is therefore a critical component of biological education. Conversely, misconceptions about evolutionary
trees can be very detrimental to one’s understanding of the patterns and processes that have occurred in the history of life.
This paper provides a basic introduction to evolutionary trees, including some guidelines for how and how not to read them.
Ten of the most common misconceptions about evolutionary trees and their implications for understanding evolution are addressed.
相似文献
T. Ryan GregoryEmail: |
11.
Marshall Abrams 《Biology & philosophy》2009,24(4):487-504
It’s recently been argued that biological fitness can’t change over the course of an organism’s life as a result of organisms’
behaviors. However, some characterizations of biological function and biological altruism tacitly or explicitly assume that
an effect of a trait can change an organism’s fitness. In the first part of the paper, I explain that the core idea of changing
fitness can be understood in terms of conditional probabilities defined over sequences of events in an organism’s life. The
result is a notion of “conditional fitness” which is static but which captures intuitions about apparent behavioral effects
on fitness. The second part of the paper investigates the possibility of providing a systematic foundation for conditional
fitness in terms of spaces of sequences of states of an organism and its environment. I argue that the resulting “organism–environment
history conception” helps unify diverse biological perspectives, and may provide part of a metaphysics of natural selection.
相似文献
Marshall AbramsEmail: |
12.
This paper focuses on evolution as a unifying theme in biology education. Our aim is to argue that the different topics taught
in secondary school biology classes should be enriched with and linked together by means of accounts of the history of life.
We named this approach a “natural history perspective” on biology education. An essential aspect of the natural history perspective
is the claim that evolutionary history forms the context for the development of an understanding of evolutionary processes.
While there are some indications that a natural history perspective can function as a context for understanding micro-evolutionary
processes, more research is called for.
相似文献
Esther M. van DijkEmail: |
13.
Christine A. James 《Biosemiotics》2009,2(2):151-167
Williams Syndrome provides a striking test case for discourses on disability, because the characteristics associated with
Williams Syndrome involve a combination of “abilities” and “disabilities”. For example, Williams Syndrome is associated with
disabilities in mathematics and spatial cognition. However, Williams Syndrome individuals also tend to “have a unique strength
in their expressive language skills”, and are socially outgoing and unselfconscious when meeting new people. Children with
Williams are said to be “typically unafraid of strangers and show a greater interest in contact with adults than with their
peers.” This apparently keen social knowledge is a counterexample to the discussion of disability among academic philosophers,
especially philosophers in the early modern period. Locke infamously used the example of disability to claim that Descartes’
arguments in favor of innate ideas were incorrect. On the contrary, Williams Syndrome may stand as an example of innate social
knowledge; something that could benefit current discourse in philosophy, disability theory, and medical ethics.
相似文献
Christine A. JamesEmail: |
14.
Since the early 1970s, the French public health system has been accorded considerable responsibility for immigrants identified
by the educational, judicial or social service authorities as psychologically distressed or socially disruptive. In this paper
we discuss three models of healing embedded in constructs of “cultural difference” and addressed at specialized mental health-care
centers catering to immigrants in Paris: “cultural mediation,” transcultural psychiatry/ethnopsychiatry and clinical medical
anthropology. Based on observations and interviews at three specialized mental health centers in Paris, we explore how these
clinical approaches address migrant wellbeing and seek to resolve crises in migrant families, especially those of West African
origin. We suggest that the prevalent approaches to therapy creatively blend concepts and practices of anthropology, psychiatry
and psychology but, at the same time, confront challenges inherent in the use of a generic “African” healing modality. Cases
studies demonstrate that in order for such interventions to be perceived as effective by patients, “cultural difference” must
be acknowledged but also situated in broader social, political and economic contexts.
相似文献
Carolyn SargentEmail: |
15.
Anya Plutynski 《Biology & philosophy》2008,23(5):605-623
The discussion of the adaptive landscape in the philosophical literature appears to be divided along the following lines.
On the one hand, some claim that the adaptive landscape is either “uninterpretable” or incoherent. On the other hand, some
argue that the adaptive landscape has been an important heuristic, or tool in the service of explaining, as well as proposing
and testing hypotheses about evolutionary change. This paper attempts to reconcile these two views.
相似文献
Anya PlutynskiEmail: |
16.
Kate Gleeson 《Journal of bioethical inquiry》2009,6(1):69-81
The 2006 trial of Suman Sood put criminal abortion on the public agenda for the first time in 25 years in NSW. Response to
the case highlights tenacious myths about abortion law in Australia; namely that the common law “is an ass” that allows for
abortion only by way of a lack of application of the law. By briefly explaining the history of abortion in Australia, I argue
that the Sood case does not represent a general failure of the common law to allow abortion, nor does it support the popular myth that
abortion is “technically” illegal, or that doctors who perform abortions have historically been the target of the criminal
law in Australia. I show that contrary to myths promoted particularly around the 1998 Western Australian reforms, abortion
has long been lawful in Australia, and the common law has merit compared to other regulatory regimes. Hence, arguments for
alternative abortion regimes should not depend on myths which are shown to be unrepresentative of the political and legal
situation in Australia.
相似文献
Kate GleesonEmail: |
17.
Grant Gillett 《Journal of bioethical inquiry》2007,4(2):119-127
The use of human tissue raises ethical issues of great concern to health care professionals, biomedical researchers, ethics
committees, tissue banks and policy makers because of the heightened importance given to informed consent and patient autonomy.
The debate has been intensified by high profile scandals such as the “baby hearts” debacle and revelations about the retention
of human brains in neuropathology laboratories worldwide. Respect for patient’s rights seems, however, to impede research
and development of clinical knowledge in contemporary health care. The Common clinical endeavour argument and a Presumption for beneficial use argument suggest that the use of tissues for research and teaching in contemporary health care can respect patients and their values
in multicultural communities where there are provisions for oversight and for opting not to contribute, both of which should
respect the diverse views of different ethnic or cultural groups.
相似文献
Grant GillettEmail: |
18.
Sarah Horton 《Culture, medicine and psychiatry》2009,33(1):21-40
Although recent scholarship on transnational mothers has rigorously examined the effect of migration on gender constructs
and ideologies, it neglects analysis of the lived experience of separated mothers and children. In privileging the exploration
of transnational separations through the single analytical lens of gender, such research reduces the embodied distress of
mothers and children to mere “gender false consciousness.” This paper calls upon anthropologists to redress this oversight
by undertaking a phenomenological analysis of the lived experience of transnational motherhood. Eschewing an analysis of mothers
and children as isolated social roles, I show that the suffering of mothers and children is profoundly relational. Through
analysis of the narratives of undocumented Salvadoran mothers residing in the U.S., I show how the strain of such mothers’
undocumented status is lived and shouldered within the intersubjective space of the family.
相似文献
Sarah HortonEmail: |
19.
Following the methodology of K. F. Huemmrich and colleagues [Huemmrich et al. (1999) J Geophys Res 104:27,935–27,944], agrometeorological
standard radiation sensors, i.e. two photosynthetically active radiation sensors and an albedometer, were used to measure
the broadband visible and optical–infrared reflectance of an oat plot during its whole growth period. From these reflectance
data – recorded as 15-min averages and pooled to daily means – the seasonal cycle of the normalised difference vegetation
index (NDVI) was calculated. In addition, a ground-based multi-channel spectroradiometer was used as a reference to estimate
narrowband “green” and “red” NDVIs at weekly intervals near noon. The narrowband “green” NDVI was shown to be consistent with
the simultaneous broadband 15-min NDVI. This shows that the configuration of agrometeorological radiation sensors is suitable
to adequately track phenological crop dynamics.
相似文献
Martin KraftEmail: |
20.
Derick A. Fay 《Human ecology: an interdisciplinary journal》2007,35(1):81-95
With the rise of joint management of protected areas, community representatives are increasingly involved in formal negotiations
with state officials, nongovernmental organizations (NGOs) and other actors. Policy recommendations have commonly idealized
“win-win” scenarios. Theoretical work on negotiation from psychology and management studies, however, points to identifiable
circumstances under which the goal of a mutually beneficial “win-win” situation may limit the strategies, and ultimately the
benefits, available to communities. Instead, an antagonistic, “distributive” approach to negotiations may be more compatible
with the pressures on and strategies available to community representatives. The tensions between a “mutual gains” and “distributive”
approach to negotiations are evident in two land claims on protected areas in South Africa: the Dwesa-Cwebe Nature Reserves,
and the Pafuri Triangle, a portion of Kruger National Park. In each, NGOs that operated with a “mutual gains” strategy, espousing
a “win-win” scenario, came to be perceived as collaborating with conservation agencies. Meanwhile, as negotiation theory would
suggest, community representatives inclined towards a “distributive” strategy and allied with a second set of explicitly advocatory
NGOs. Expecting that communities should embrace a “win-win” scenario from the outset is unrealistic and likely to reduce communities’
power in negotiations.
相似文献
Derick A. FayEmail: |